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D-(-)-PANTOLACTONE

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D-(-)-PANTOLACTONE Basic information
D-(-)-PANTOLACTONE Chemical Properties
  • Melting point:91 °C(lit.)
  • Boiling point:120-122 °C15 mm Hg(lit.)
  • Density 1.1066 (rough estimate)
  • refractive index -50.8 ° (C=2, H2O)
  • Flash point:120-122°C/15mm
  • storage temp. 2-8°C
  • pka13.12±0.40(Predicted)
  • form Crystals or Crystalline Powder
  • color White
  • optical activity[α]25/D 49.8°, c = 2 in H2O
  • Water Solubility almost transparency
  • Sensitive Hygroscopic
  • Merck 14,7013
  • BRN 80957
  • InChIKeySERHXTVXHNVDKA-BYPYZUCNSA-N
  • CAS DataBase Reference599-04-2(CAS DataBase Reference)
  • EPA Substance Registry SystemPantolactone (599-04-2)
Safety Information
  • Safety Statements 22-24/25
  • WGK Germany 1
  • 3-10
  • TSCA Yes
  • HS Code 29322090
MSDS
D-(-)-PANTOLACTONE Usage And Synthesis
  • Chemical PropertiesWHITE CRYSTALLINE POWDER OR CRYSTALS
  • UsesD-(-)-PANTOLACTONE is an important intermediate in the synthesis of pantothenic acid as well as a degradation product of pantothneic acid in the liver. Causes disorientation and hypothermia, and prevents phenamine-induced hyperthermia.
  • Purification MethodsRecrystallise the lactone from Et2O/pet ether, diisopropyl ether or *C6H6/pet ether and sublime it at 25o/0.0001mm. It hydrolyses readily to the hydroxy-acid and racemises when heated above 145o. The Brucine salt has m 211-212o (from EtOH). [Kuhn & Wieland Chem Ber 73 1134 1940, and Stiller et al. J Am Chem Soc 62 1779 1940, Bental & Tishler J Am Chem Soc 68 1463 1946, Beilstein 18/1 V 22.]
D-(-)-PANTOLACTONE Preparation Products And Raw materials
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